If Baseball Prospectus is a sort of bible for inside baseball, then writer Bryan Smith is at least a bishop of baseball. Ok, enough baseball and religion. My point is that when Baseball Prospectus writes about the Cape league, it's worth taking a look.
Smith and Baseball Prospectus have published their own mid-season review, which I found to be worth the read. Lots of analysis, some of which we have touched on here. I thought Smith's sense of "sleeper" players was quite interesting:

"For me, the most exciting aspect of the Cape Cod League might be its annual cadre of sleepers. One player really initially under the radar was Jason Castro, who hit just .167 in 42 games at Stanford while battling an injury. Castro is splitting time with Buster Posey behind the plate at Yarmouth-Dennis, but coach Scott Pickler notes that Castro is the more polished defender. At the plate, he's a good contact hitter with a line-drive stroke and a little power potential. Catchers are in demand, so Castro has already been moving up draft boards in the season's first two weeks. Also moving up is Matt Hague, who was drafted in the 11th round by the Indians following his junior season at Washington, but is likely moving to Clemson for his final collegiate season. Hague has drawn 14 walks in as many games, and he's also hit six extra-base hits. He's expected to replace Andy D'Alessio with the Tigers. My favorite early-round sleeper is Wichita State's Conor Gillaspie, a third baseman with a well-rounded game and an intelligent approach, and showing power potential through his first six games in the Cape."